This isn't actually surprising, as a matter of fact it was bound to happen. In many instances, Toyota and other large foreign automakers operating assembly plants in the U.S. pay their workers near-UAW wages in an effort to dissuade them from unionizing. In a year when Toyota's sales have grown to record levels and the domestics are losing market share fast, it was inevitable that Toyota's big bonuses would put the pay of its assembly workers in the U.S. ahead of the UAW, which saw no bonuses last year and likely won't for a few. The lack of overtime hours was another hit to the UAW that dropped the pay for many of its members. In time, as the domestics (if the domestics?) recover and the big bonus checks are in the mail again, we expect the UAW's pay to again top that of any non-union assembly workers in the U.S.
We recommend reading the whole article written by Jason Roberson from the Free Press, as there's a lot of layers to dig through with this story.
[Source: Detroit Free Press]